Datasheet

ADS7823
4
SBAS180B
DIGITAL INPUT/OUTPUT
Logic Family CMOS ✻
Logic Levels: V
IH
+V
DD
• 0.7 +V
DD
+ 0.5 ✻✻V
V
IL
–0.3 +V
DD
• 0.3 ✻✻V
V
OL
At min 3mA Sink Current 0.4 ✻ V
Input Leakage: I
IH
V
IH
= +V
DD
+0.5 10 ✻ µA
I
IL
V
IL
= -0.3 -10 ✻ µA
Data Format Straight ✻
Binary
ADS7823 HARDWARE ADDRESS 10010 ✻ Binary
POWER SUPPLY REQUIREMENTS
Power Supply Voltage, +V
DD
Specified Performance 4.75 5 5.25 ✻✻V
Quiescent Current High Speed Mode: SCL= 3.4MHz 0.72 1.0 ✻✻ mA
Fast Mode: SCL= 400kHz 380 ✻ µA
Standard Mode, SCL=100kHz 240 ✻ µA
Power Dissipation High Speed Mode: SCL= 3.4MHz 3.6 5.0 ✻✻ mW
Fast Mode: SCL= 400kHz 1.9 ✻ mW
Standard Mode, SCL=100kHz 1.2 ✻ mW
Powerdown Mode High Speed Mode: SCL= 3.4MHz 346 ✻ µA
w/Wrong Address Selected Fast Mode: SCL= 400kHz 136 ✻ µA
Standard Mode, SCL=100kHz 34 ✻ µA
Full Powerdown SCL Pulled HIGH, SDA Pulled HIGH 3 3000 ✻✻ nA
TEMPERATURE RANGE
Specified Performance –40 85 ✻✻°C
✻ Specifications same as ADS7823E.
NOTES: (1) LSB means Least Significant Bit. With V
REF
equal to 2.5V, 1LSB is 610µV. (2) THD measured out to the 9th-harmonic.
PIN CONFIGURATION
Top View MSOP
PIN DESCRIPTIONS
PIN NAME DESCRIPTION
1V
REF
Reference Input, 2.5V Nominal
2A
IN
Analog Input.
3 A0 Slave Address Bit 0
4 GND Ground
5 A1 Slave Address Bit 1
6 SDA Serial Data
7 SCL Serial Clock
8+V
DD
Power Supply, 3.3V Nominal
TIMING DIAGRAM
t
R
t
BUF
t
LOW
t
F
t
HD; STA
t
SP
t
HD; STA
t
SU; STA
t
HD; DAT
t
SU; DAT
t
HIGH
t
SU; STO
SCL
SDA
START REPEATED
START
STOP
1
2
3
4
V
REF
A
IN
A0
GND
+V
DD
SCL
SDA
A1
8
7
6
5
ADS7823
ELECTRICAL CHARACTERISTICS: +5V (Cont.)
At T
A
= –40°C to +85°C, +V
DD
= +5.0V, V
REF
= +5.0V, SCL Clock Frequency = 3.4MHz (High Speed Mode) unless otherwise noted.
ADS7823E ADS7823EB
PARAMETER CONDITIONS MIN TYP MAX MIN TYP MAX UNITS